Cutter-head.



ha D. LIA ULL).

' GUTTER HEAD.

unicum!! rxpnn rnx.9.uo1.

a anims-sum1* 'z wwmamo AWM Y represent the hed -of the screw-cuttingma- DefrAfrEs "Pagnri'r onirica.

mi l. LANDI., QI' WANRSMEO, Pmvilm.

i emiliani. l 948x155. caucasien er Lauer; remet. :patented Fem 8 1910;appunti mi remar; a, iam.A mm no. mais. f "l To all whom item1 yconcern: ed on suitable ways onfthe top of the bed Be it known that l,Aniiaiiaii B. Lancia, a citizen of the United States, residing atWaynesboro, in the county of Franklin and State of Pennsylvania, haveinvented certain new and useful Improvements inCutter- Heads, of whichthe following is a specilication.

My said iiivention'consists 'in certain improvements in the detailsofconstruction of cuttcr-heada for machines for threads on bolts,screws, etc., whereb a ma- 'chine is provided for this purpose whichwill be positive and rapid in operation and perform its work in a veryperfect manner, all as will be hereinafter more fully described andclaimed.

Referring to the accoiiipanfyin drawing? which are made a art hereo anon whic i limi reference c aractera indicate similar parta, Fi n 1 is aaide elevation of a rtion of t bed of a screw-cutting mac ine embodyinga cutter-head of mf improved construction, Fig. 2 a top or p an view otthe portion thereof carrying the cutter-head, Fig. 3 a detail sectionalview-through a part of the means' for operating the die-cloaiiigmechanism, ig. 4 a detail view. of the lever for e rat' g said mechanismin elevation, Fig. a front elevation of one of the cutterheadalwitli theparta'com oain the cutterdie in operative position, ig. a. crosssectionthrougli the cutter supportin cylindera and the casingfrontainingthe c rin therefor on the dotted line 6-6-in Fig. Fig. Ta rear'elevationof one of the cutter dies partly in section, Fig. 8.a lonitadinal Asection on dotted line 8-8 in Fig. Fig. 9

va similar view on dotted line 9--9 in Fif?, me

Fig. 10 a simil `view on the dotted 10--10 in Fig. 7, and Figs. 11 to18, inclusive. detail views illustrating arts of the mechanism on anenlarged sca e and more clearly. p

In said drawings' the portions marked A chine, B the work su portingcarriage, and C thecutter-head. T ie inachineinay, in its generalcharacter and construction be of any a proved forni and the bed A is acasting of t uit. character which will afford suitable sup :torta andhea'rn s for lthe various parte of,t mechanism. he carriage B ifi mountcuttingA and has a .fork holdin clamp B' 'in which the wort: b may be hed in Kiticnajto' be., perated upon by the die of t e critter-head'v Saidcarriage is operated back and forth upon the ways on bed A by anylsuitable4 a rack `and pinion,

mechanism, preferably through the medium of a hand lever B'.

AThevcutterhexid is compelled of the outside central bearing in the headof casin C and the forward end of which is forni with a shoulder and isfitted into a recess around n central rforation in the frontend of thecasing It is held to move longitudinally with said casing C by means ofa transverse m 2 which extends throiuli a perforation in the wallof thecasing am at its inner end engages with a groove which extends part waaround the said cylinder C.

e he forwardend of casing C is formed with a recess under a flange c inwhich is rigidly fixed a hardened ring 3 'having clutch teeth on itsouter face.

the teeth on ring 3, is fixed upon the adjacent face of an annularflange around' A. similar ring): 4 with similar teeth, adapted tomeshwit i ,sa

Gli

IBO

the outer end of said'casing C', so that' when said casings C and C arein lposition for thee:v

teeth or t e rings and 4 to mesh aaid cas' inge will he held againstindependent rotiiryifool `r Ymorcinent. A s ring pluiigeris inou'ntedin.4 a socket or per oration. formed one on each: of two sides of saidcasing C', opposite each other, consisting of a stein c' adapted toslideiii a perforation iii a' screw plug ein which is screwed into the outerend of encia of said socltctgi, said Stein being provi-.sied

with a head ci, anda coiledy spring 'cf being" interposed between saidhead anden-id plug. .t transverse pin c? is inserted through aperforation in the outer casing C. its 'inner end being imvidcd with ananti-friction sleeve cf'. which projects through Ia slot iii casing C'and across the socket containingA the ilunger, said sleeve restingii;:i1ti.-.t,the heini c o? mid plunger. The tcndencj." ci".

ich

ieri

' .6g-ad to by Said rack 10 is adapted to be therefo to hold the parte Cl Wand the teeth on the rings 8 and'4 into engagement with each other,as it at one end against the sleeve c on l- I In c"attadigltothecalixand at and a$inst the lug 'Ad with m0'. nder the endoi t pin c?,

.a'ahort screwthreaded portion d f with netsw-threads in innu' o ora innthrough t cas- G'a'ndthuagdsaaid in in' 'tion `C'iaiorlnedw' -feur'ndiorationa around ita central perfomeach af. which cute into laidcentral oratiofn. tgarrot-ations 'foi-lin dthe or cu er carrying m ersStag-ch of said cutter carrying glinders C` is formed with teeth arounda section of ita peripherv adjacent to the central cvliiider C -andsaidl central cylinder C2 is formed with teeth on its periphery whiclmeah with aaid teeth of the cylinders C. las shown moet clearl in Fi 6and 10. A i wheel 9 is mount -upon t ie rear end of the l omtral clinder C. Said-central cylinder E O' haa ort transverse studs and6projecting from o posite sides of its rear end, l

ruft

en the'outer en lof which are mounted rollall Tand 8, which extend intoradial notches in nid wheel. Said wheel 9 is thus secured to rotate withsaid central cylinder C but .id central cylinder is permitted a limiteddialing movement in sarl wheel U, the rollerl Tand 8 serving to preventany friction o r binding between the parte. Said wheel i l il formedwithteeth aromi-i a portion of its i circumfa'ence on one side with whichteeth rack 10, which is mounted in a perforation in casing C, isadcptmeans of a screw 11, the inner .d o! 'win L abuts against u plug 12fixed l le'end of the transverse perforation and' lbetihnel' `vnd ofwhiccli has a'htixtd 12;l whicl 45 abate inet a shoul er near t e ot eren( el perforation.A Said screw extends the@ a acrew; threadedperforation in .il nek bar. Thus said screw is held from movlnentineither direction and the turn n el it by a screw-driver inserted inthe m ration, es moet clearly chown in Fig. ill operate said rack bnr'in ai or the other direction and thus turn the wheel 9, and throu h saidwheel 9 the .mitral cylinder C an the cutter carrying lindern C aadesired, to adjust the cutter ie to the pro r sisef The transverseperforation in which said rack bar 10, is mounted is preferably circularand of three diti'er ent sizes throu 'hout its length. The larger sizeat one ends to admit the screw plug 12, the intermediate size the rackbur 10 'and head 18 and the smaller size to serve as an i abutment foraaid head 18 of the screw and u to admit the acrafw-driver from theopposite] vrack empeze j end its other sides and a transverse pin 14formed with longitudinal teeth on ita shank ia inaerted in a'traneveraeperforation in caeing C with said teeth engaging the teeth of said barso that es .finiti bar is moved back and forth by the screw it it willrotate said pin 14 in its seat. The head of said pin is. in the form ofa dislt seated .ina countermLk seat. nmiind the outer end of theperforetion'in which it is mounted. Said head is provided withgraduation marks around ita periphery and a zero mark is formed ou theside of casin adjacent thereto, as shown most clearly in `ig. 16. Il vthis means the size of the 'die muy be readily determined and occured bythe adjustment of said screw 11. Another perforation :t0 is formed in'the casing C near tho inner face of its rear und cxtendingthrough'from'side to .side of Said casing. near euch outer end formed by rings:1 and 22 set into said outer ends. A rod 23 formed with small ends.adapted to 'slide through pcrforutions in said rings El und :22. ismounted in seid transverse ,perforation und has an enlarged centraalportion :24- between which and tie inner'cnd of eachv ring is mounted a'coiled spring 25. mounted in a perforation in the casing C and extendsthrcn h a curved vslot in the tuning t into aai transverse perforationand into an aperture formed in saidy en'- lai-rcd portion :24. `Said-`springs 2.3 are of uniform tension and are arranged to normally hold thecasing C and when the teeth oi tin-e rincjs 3 and i are tiiseiigepged,so that thc faces or seid teeth will abut und not engage. The aperturein the enlarged poi'- tion 24 of the rod 23 is considerabiv larger thanthe pin 26 which allows for the independent rotary movement oi lever isalso formed ball-shaped und .engages with the socket 28 in the canin '1;C. Its er@ treme cuter end is also-ball-sisiped und cu- .geo with a shoe40., which is adapted to tigt-.inst a circular friction ihre on ring C.tiiiidring C has an arm c on one side and an arm 01 on the other` usshown in Fig. 4. The outer end of arm c is formed with e verticalperforatimi und is mounted on i. vertical pmy tie a extending iin :fromone @..pmA 'm `ci cido or. tno a wurm e* has ahorifor thelpurposeofyturninw it. Said bar 1n is'formed with teet on one of b'atlperforation Vhas` :shoulders A pin 26 isl cjgfzideis for ,a limiteddistance. when forming? operated.

' perforation e through which a rod other'aide near its forward end.

B* extends.' Seid rod B* ia carried by the carri B, ita outer end beitscrew-threaded a screwed into a screw-t ireadcd socket ni said carrieIta inner end is supported by'aat'anda e' coat on the A andvextendl uptherefronr and havnig a horizontal ration therein through which saidrod-extends. ad'uiitable collar b is:

tween aaid standard a' and seid collar b',.

whereby it is permitted a limited independent movement onaaid rod B. Thehorizontal perforation through the arm e" of the ring C* has a'irinternal s irol groove in the form of a'thread adapt to receive thecoils of the 'a rin Ji, said ring being turned into sai ration in t eannie manner as a screw-threaded rod-would be turned into a .provmanner. ,In the construction w.

held inplaoe of aubatantially the Home form m-s work holding carrie thenslid within said :rnng th B alid through said eave and the collar b'adjusted, no may be The cutter-head C has the cutter-holders C t'nountedon. the outer ends of the cutter holdin cylinders C* in the usuel or inapown aaid cutter-holders are mounted upon two projecting' pina c and o"on the outer end of nid cutter holding cylindera, each being y by ascrew o" which ocrews in n ierforation in the pin e" and the o which"bears :against a shoulderl arou'ntlthe perforation in saidcutter-holder which receives aaid pin. The cutters C are hl h lddmdn mformer tente. ad'ustr e in oveiyled. oiga, in thelface di' aaidcntterholders y menne of screw-plum C' as shown infFig. o. These partebeing arranged no shown in F' 5 and 14 and the cutterhead mount on themachine as shown in 'Figari and 2 and the work eecured in the shown enFig. 1, the-operation p s as follows: lihe car rageis moved toward thecutter-head by means of the lever B until the point of the nut 'the'sleeve. bein i and e. rodI 'holt b'engag'e with the die formed bythe ecuttera C' which dio proceeds to cut the thrcad,upon said bolt as it isfed forward into Asaid die. The rod Bt slides.; through the perforationin standard a as .said carriage B moves forward, the collar b beingfixed on Huid rod to limit the forward movement of said carriage et thatpoint where thcl thread will have been cut back'on said bolt the desireddistance. When said int has been reached the continuation oi! t e motionEAB ofthe cutter-head will serve to pali part C' of the casinglongitudinally of part C until the teeth of rings 3 and l are free fromeuch other'when one of the springs 25, accordini,r to whether thenori'.: is being,r out right-hand or loft-hand, will, through its hcnrinv upon the pin 26. serve to rotate part C' ightly und open the die tofree thc cutters from thel work and permit it to be n'itlidruu'n.'`Carriage B is then run back and the part of sp'ung b between collar band the arm .cm will be compressed to force said arm toward the standarda and tuin ring.r C* ou ite hinge a so that its fact will heur againstfriotton shoe 40 and turn tlie lever 30 so as to rotate the parte C undC' of the cutter-houd eutlicientlyv for the` teeth' of the rings 3` and4 to again engage each other when the parta. C and C will bedrawngvinto' closed position hv means of thev springe ct, land vsecuredcloned by the enga nient of said tet-tin as before deacribul. hc springb muy he adjusted so that the part on each lide of said arm c" will beof the required len th and tension forthe purpose. This can e readilydonc hy turning it hack and forth in' the spiral groove in 'said arm undadjusting the collars I;a and bi. The required tension of the sprin canhe thus secured to obtain the result sought nt the different limits ofthe movement of the carriage B a-` may hc made neccswarv hy work oflith-rent lengths. as will hercadiit' understood. The part of saidspring between arm c und tho yetandurd u' serves to force ringr C* awayfrom said stundurd as soo'n as the carriage i moved to the cuttewheadwith theu'ork so that the pressure or Suid rim against friction shoe 40on lever 30 is relieved and said hcad allowed to 'run free durint.r theoperation oi cutting: and until the carriage is again run hack towithdraw the work from the dio.

Having' thu.L `fullv described mv said invention. what I claim as nc'oand desire to u-vcnrc h v Lettere Patent, im-

l. in a hcrew cutting machine. thc coiniiinution. of a cutter-lu-adcoinlirifng rtwo :iarts adnptcd to have a liinitcd nulctwiuh-ut{novi-,nient hoth longitudinal und rotary.

rocking cutter-holders mounted in one o 1.

ier, the inner part l cilinders.' said viiicr, the cutters .foropeiiingir'l said die. 'ieiin's 'pendent n'iovemeii't, n series 'of:noun oni-said cylin en, 'means for holding said casing' parts in'closed, position, meana-,for opening said die, and means for it'comprlng a lever mounted in ono parte and engaging. nt its Aiixinor end iththeother in position to impart a rocasting, daid lever being arranged tocontact with a part onzthe side'of the frame and oonnected'co neoperated by; al rodearriyd n 'the work holding mid hingedpolilnrt, saidcnrringe, and aai' rod thereon. substantially' aus eet forth'.

3, Iii-a cutter-head. fonscrew-cutting mn? chinees, the oombinii'tion ofthe casing coin` of -an outer 'and an inner port, acid inner rt beingmounted |to have n limited independent longitudinal and yiotiiryrmovement and contaiuin the' lieoringnjfor the cutter holding cyliii ers,anidfcutter holding 'of the casing to hold, the die closed, menne' 'forclosing it compiiniiigz n' .lever mounted inni recess in 'the outer peutand adapted to engngewith erafV cutter holding cylinders` mounted in midperforatioiis andfornied with teeth on th'eir adjacent aidei adapted to'mesh with the teeth on said central cylinder,l inmnwioradjusting said'central cylinder cincinnercntinllylto adjust the sineof the for:locking 'said two parte of the 'when-iii normal position' comprising;anniv lar toothed: rings on'e tired upon' ench'part with their'teethndafted to mesh with each -other, means for hol ing said 'tiro partetogether with the teeth of-said ringin enadaptald; to' ar againstport'onsftixed t o said two rting a limited rotary more.

genie'nt. comprising' apringisv menne for'iin l in'eiit to the innerartoi the casing whom open comprimi a eveir formed with a tmlbell-shape( portion mounted in' a receso in the outer nrt with its innerend-cngngiiiii with a'aoc :et in said inner part.

menus for operating' said lever connected with the workholdingcfai'i'inge, substantially as set foi'th.

5. In u cutter-head. the 4combination, of u casing eonipiwed of twoparte: one mounted within the' other. the. inner piu-t iidaped to'havealimited iifidegzondeit leninovmiicnt.v` to aaid inner part' of, ,thel

c-vlindeni, means for locking-the two parte insane being will@gitudisxf-QLd rotary movnetrl, onturd' 09 thereo cnt-ters inr 'siidcutter. and

mom' or holding ing closed comprising inwr-engagng ci -teeth on eachpart, snbetantialiv aa'lct feath- 6: In a critter-head,` the d1 'casingcompi-ming an outer pai-Linomid ,upofthemnchnd an inna" part 75 -`withinmid outer pa to have@ rotary sind' "lungi l mm3 inde- ,Wmdnt oflwc'iidouter.' tbm chold in ,fr cylinde'iia mounted in senta rsiid inner p irt,the 'cutters mounted en aeid cylinders; springs for normally lowing;.imidporf to.-

;ftethor lon-wofitndmnlly. each' on* parisheing' pmvitcql with clutchteeth adapted to engage with mch'othcr when in -closed polsi, ltionand'holil said parte` independent"l mthry movement,- epi-ings arran Itoturn eaid inner'pitrt'vh eii-f said v arefdeen- @red to'ii position'here said teeth'. will mi* against the tocca of cncli, other, and

nomini for turning; mid inner part back* to :position for nid teethtocngnge comprising :i lever fulcrnmmd iii the outer: :indenff,`;igfinggwith pont :it inner end and ite outer end :adapted to with md'beoperated by a part oonnlaoted 'with the woik'zgxgieiting cari-inge,snbcnticlly forth. V 7.. In' n enttenheeid, the combination, of -acneing comprising ein outer' nii-d inner part, the imm: Voir carrying,the titers comprising; tto 2er opening endl eoemgg mid' die, ai yein-.mias for noiding said die closed comprising inform-@Engaging teethon indignant annular nieuwe? two parte of said casing, enbatnntinlly nelet forth.

l 8. Inn' cutter-heathl the combination, of the oozing comprisin ancantor and aninner part; snid'jnner port t' Y, mounted to have a limitedindependent rotar-:y sind' longitudinnl movement,V means for ionizingand tvp 1. `parte agninst independent* ron-ry, movement when the die isclosed, nimm for imparting aslimited independent i'oory moveinmtto stidnlmrpzirt y'v'il n spfnnffa'mcniited n. Vet. in sin and aidanted toybeni ogg-singt n* t ri'ied b luid inner port nnd projecting: throu aalot'intosaid anche@ andineaiis Y for vnetiirifiingiiaid inner pai-t, toposition, enbstnntfly as eet forth.

9. En :iciitter-heiid, the comfiiination. of n casingromprisini! anoiaesf and an inner piirtQthe inner part being ainxiiged ioliave elniitedindependent ro'inrjfr and longitudinal movement, thecutter-holding eylindei` l. mounted in seats in said inner pui-t. which:seats out into the central opening in said vwiwn'w-...i nine!- :fisiri: cent-ml @connecte-gitane: mon-m nimm pim f :e

ico

-inoveinent to relaas-f the two piirts operating mid rack, and anindicator con-- nected willi said rack and adapted to be moved as saidrack ia moved, whereby the size of the die may be readily determined,,.iibatiintiall;7 as set forth.

l0. In a thread-cutting machine, tli'ecoiiihinntion. of'n 'cutter-headcomprising an outer and an inner part, the inner part being mounted tohave. a limited independent rotinv Aand longitudinal movement. means foreffecting said movements, the cutter die mounted on said inner part,means for openingr and closing said die operated by the movement. ofsaid inner part, said means for closing;r the die comprising: levermonti-ted in the outer part and engaging with n socket in the innerpart, its outer end heing adapted to be operated hy trictioiial contactwith a part controlled by the travel of the work-holding carriage, andsaid part, Milmtnntiallv na set forth.

11. In a thread-cutting machine, the combination. of n cutter-head comrising an outer and an inner part, means or locking said arts when inclo ition, said inner pnrt ing vmounted to have a limitedlon tudinalmovement to free it from the l ing means, and :i limited rotary movementto operate thedie opening and-closiing mech anism, means for effectingsaid movements, said die cloeiin mechanism comprising a lever fulcrnineat n in a suitable bearing in the outer part with ita innerend engagingasocke in the inner 'port and its outer end an". bea .n the path of anadjiietnble friction ring. said friction ring.: and means for movingsaid ring into or out of contact with said lever connected with the worksupporting carriage, substantinlly mi act forth.

l2. ln n tlii'vml-t'utting machine, the conn hinution. of n cutter-'headconiirising an outer and an inncil part. menno toi' locking saidpni'tswhen in cios-ed praiton. said innur pnrt carrying the dio undmounted to hnve n limited independent lon itudinal liroin the lockingmenno that l ,lds them from inde-4 pendent rotnry movement .and limited1'0- tary movement for operating tnc die onening and closing mechanism.means for effecting aairl movements, said disclosing;

oint between its ends.

cari-iii animi n leva.: adapted to be opent impart a. rotary Mamanaaldlnnarpartoftbecaeingan'd" tot operated b contact. with o to hol icarriage, and aaidifriction ringen stnntia lv aa set forth.V i'

13. In. a screw-cutting machina, the come bination of a cutter-headoompril'ng two parts, the vdie' carried 'by the im part.,

ymeans tiur opening and closing :oid operone position andl to throwitaway from said tion to contact' leverwhen itnioveu in nn oppositedirection,

Substantially no cat forth.

.1.4. in a scrow-cnttin machine, the coin' hinetion. of tho hed, t eWorn supporting carriage, the cutter-head 'comprising a two part casing,the cutter die carrie-d by the inner )art of aaid-caaing-and adm @ted tobe opone and closed bythe indepen ent move ment of mid inner part meansfor ell'ccting said movement, the closing iiieclinatiiam oomprix-'sinnra lever vforimparting to ceiid inner partv an independent rotary.inovenient, the

end of said lfevpr projecting in the petti oi. ii

inirotally'mounted upon tno casi friction rin-5.,

and ci. nt; with o'. rod carni-,rfi by the noi-: in.. ...ing carriage,said fricilicri ring insana tor 'timiting the movement o anni .and a aring mounted on said rod and ai apted to oroe said lever into Contactwith said iever under a yielding rientro .when the carriage moveshinone. f irecten and force it away und laver when they corrie e moves intime agirait@ diizoction. substczntin lv its set forth.

i5. Ina cutter-head, the combination, of

the opening mechanism, the cloningr mechanifnii. the operatingmeonanirm, and the wtting mechanism, said iiettiirniiii'v con- L priaingan indicator dial eine@ to the aetting device, whereby as 'sai' edf;sied said indicator dial willi oc turned to indicate the size of thedie. sizhgntially as cet forth.

16. In a :screw ci'itting machine, the cmibinntion. of the work holdingcarri-afge., .e cutter-head. means for opeuitinp said carringr. 'meansfor o iernting sait head. the cutting: die carried y I@nid hend. meansfor opening said die, and means for closing said die comprising a levermounted upon 'and ctinnoctod vfiih onnronriiito ports oi? wenn ISL) device is dnd tad frica m1161111 hmnf nt* l De ou thi.'

nu n mmh b 0 .Il .klamm M.. m mm u,

A A m M www#

